Grooving tool



Sept. l0, 1929.- F w,` KAMMERER 1,727,988

GROOVING TOOL Filed April 2'7. 1927 Z5 Sheets-Sheet 1 ZQ. i5

am, www

Sept. 10, 1929, F. w. KAMMERER GROOVING TOOL Filed April 27, 1927 3Sheets-Sheet 2 Sept. l0, 1929. F.w. KAMMERER GROOVING TOOL Filed April27, 1927 5 Sheets-Sheet 3 atbozneq Y.

Patented Sept. 10, 1929.

umrEin STATES FRED W. KAMMERER,

OF NEW YORK, N. Y.

GROOVING TOOL.

Application filed April 27,

This invention relates to improvements in wood-working tools especiallyadapted for making grooves in window-sashes or the like, for thesubsequent insertion of weather strips.

The invention comprehends the production of a tool of the abovementioned character comprising an adjustable chisel associated withguiding means therefor, said guiding means further functioning as a saw,as will presently appear.

Another object of the invention is to provide adjustable guiding meansfor said chisel, said means being adapted to slide along the side of awindow sash or the like, for guiding said chisel vin order that the cutor groove made thereby will be maintained in spaced parallelism with theside of said sash frame.

A further object is to provide said guiding means with a saw arrangementfor cutting into the cross-piece of the window frame or the like, inunison with the grooving operation of said chisel through saidcross-piece.

A still further object of the invention resides in t-he provision ofmeans for doublegrooving a sash or the like, embodying an auxiliaryguide having a saw arrangement and adapted to adjustably support achisel operating in conjunction therewith.

With these objects in view, together with others which will appear asthe description proceeds, the invention resides inthe novel formation,combination, and arrangement of parts, all aswill be described morefully hereinafter, illustrated in the drawings, and particularly pointedout in the claims.

In said drawings:

Figure 1 is a side elevation of the tool.

Fig. 2 is an elevation like unto Fig. l, but showing the opposite sidethereof.

Fig. 3 is a front elevation of the device.

Fig. 4t is an elevation of the upper and lower sashes of a window toillustrate the work performed by the tool.

Fig. 5 is an elevation of the top of the lower r sash, the dottedlinesindicating the cuts to be made by the tool.

Fig. 6 is a front elevation of the tool embodying a slightly modifiedform of guiding means.

Fig. 7 is a detail View of Said guiding means 1927. semi No. 186,921.

tool yand viewed from the is shown the upper sash and lower sash 6 of awindow-frame, each comprising side members 7 and S respectively, joinedby crossrails 9 and 10. By the use of my improved and novel tool Ipropose to cut grooves 11 and l2 in the side members 7 and 8 andcontinue the same through the ends of the cross-rails 9 and l0, asclearly shown in e. However, upon inspection of Fig. A it will beobserved that the sashes are provided with crossrails having their innerfaces oppositely beveled which abut when both sashes are closed, andwhile some crossrails may not present beveled meeting faces, yet allyhave some sort of projection which separates the sashes sufficiently topermit a cut for the insertion of the usual parting strip.

The devices developed by my predecessors in this art comprise ay chiselfor cutting the n groove there being guiding means in the .form

of a plate or the like for the purpose ofysliding along the face of theside members to direct the line of the chisel. However, ithas beenimpossible to cut through the end of the crossfrail in viewof theprojections extend` ing inwardly therefrom and it has been necessary toremove the guide or fence in order to work on the cross4rail and linishthe groove. As will appear hereinafter my improved tool overcomes thisdefect and thusr permits the cutting of a continuous groove through theside, members and each of the cross-rails disposed at the top andbottomrof the sash, withthereof, which is provided with an upwardlydirected extension 14, at the forward end thereof which serves as asupport for the hand grip 15. For convenience and ease of operation Iprefer to provide said extension 14 with a side projection 16, (see Fig.3), the top portion thereof being arranged to receive said grip'anddispose the saine in an angular position. As shown in Figs. 1 and 2 thegrip is mounted on the top ofthe extension 14 and by removing the screw17, the same may be positioned on the projection 16, as indicated inFig. 3. 'Ihe rear of the device is further provided with an operatinghandle 18, preferably forming an integral part of the body portion 13.

Depending from said body portion is a skirt portion 19, being ofrelatively thin material and having an opening 2O presenting an obliquecut 21 to serve as a brace forthe chisel 22 adjustably mounted in saidbody portion. It is of course obiuous that the rotation of the shaft 23carrying the serrated wheel 24 causes the latter to cooperate with theserrations 25 of the chisel 22 to affect the advance or retardation ofthe latter.

The guiding means hereinbefore referred to comprises a plate 26 slidablymounted on pins 27 and 28, (see Figs. 2 and 3), extending laterallyfromjsaid body portion, the inner ends thereof being secured by nuts 29and` 39 as shown in Fig. 1. By this construction said plate 26 ismaintained in spaced parallel relation to said skirt 19 and as shown inthe drawings is disposed below the bottom edge thereof. rIhe spacebetween saidsliirt and platemay be varied by loosening the setscrews 31and 32 threadedly engaged in bosses 33 and 34 of said plate. However, inview of thestandard sizes of window-sashes and the like, it is possibleto have a lined location for said plate and to this end collars 35 and36 encircle the vpins 27 and 28 between said shirt and plate and forordinary' purposes this spacedrelation meets the general requirements.Nevertheless, adjustabilityof the plate 26 lis provided for.

Said plate 26 is further provided with saw teeth 37 extending preferablya distance from the forward end greater than one-half the longitudinaldimension thereof, the bottom portion of said plater being 'beveled onthe outer side, as indicated at 38 in Fig; 3.

The depth of the groove to be cut by the tool is determined by settingthe gauge 39, the slotted upper portion 4() thereof being engaged by thescrew 41, and obviously by this arrangement the depth of thegroove isdetermined by the distance between the end of the chisel 22 and thebottom surface of the foot portion 42 of said gauge.

In the operation of the tool the inner face Vof the guiding means oryplate 26 abuts the inner face A of the side memberof the window sash andin view of its extension below the shirt 19 and the cutting edge of thechisel 22, the latter is guided in a position to start the cuttingoperation, and upon the advance of the tool the saw teeth meets thecross-rail and begins the sawing operation in line with the inner face Aof the side member. The tool is now reciprocated in the usual manneruntil the foot portion 42 indicates that the proper depth has beenreached. In Fig. 5 the dotted lilies B indicate the start of the groove,while the dotted line C indicates the saw-cut `in the projection. Fromthe foregoing it is apparent that the saw arrangement is used as a guidefor the chisel until the cross-rail is reached and then the saw goesinto operation and obviously cuts into said cross-rail and continues theguiding operation.

While the tool has been shown as used in connection with window sashes,it will, of course, be understood that it is equally adapted for cuttinggrooves into doors or similar structures wherein weather strips are tobeincorporated. n The modified form of guiding means, depicted in Figs. 6to 8 inclusive, comprises a plate 43 somewhat similar to plate 26, andis provided vwith apertured bosses 33 for sli-dably mounting said plate43 on the pins 27 and 28. f

However, my main purpose in providing this auxiliary guiding means orplate 43 is to increase the utility of the tool, and as willpresentlyappear all the features of the form just described are retainedand further supplemented by means for making another or extra groove inthe sash.

To this end another cutting element, or chisel 44, is mounted in saidplate 43, the latter being obliquely groove-d as indicated at 45, (seeFig. 7), for the reception of said chisel, and through the cooperationof the slot 46 therein and the screw arrangement 47, the positioning ofsaid chisel and the depth of the cut to be made thereby may be adjustedat will.

The operation of the tool in this modified form is quite similar to theother form in that the inner face of the plate 43 abuts the inner face Aof the si-de member of the window sash shown in Fig. 9 while the chisel22 is starting the cut B in the sash. At the same time, however, theother chisel 44 starts cutting on the dotted line D and as the tool isadvanced the saw arrangement 48 meets the ycross-rail 10y and cuts thesame on the dot and dash line C. This operation is continued until thefoot portion 42 encounters the top of the sash and thus a double grooveyis formed in the sash as indicated in Fig. 10.

From the foregoing it is apparent that the utility of the tool ismarkedly increased by this auxiliary guiding means or plate 43. In viewof the adjustability of the chisel 44 and also the chisel 22, the depthsof the grooves with respect to each other may be varied as desired andfurther the space therebetween is equally susceptible of variation,through the intermediary of the pins 27 and 28.

In view of the double groove arrangement it is possible to use a weatherstrip of large proportions and of greater utility.

vWhile the present is a disclosure of the preferred forms of theinvention, it is to be understood that the invention is not limitedthereto, as various changes in the minor details of construction,proportion and arrangement of parts may be resorted to without departingfrom the spirit of the invention as defined in the appended claims.

I claim:

l. In a device of the character described,

, the combination with a cutting element and guiding means therefor,said guiding means being spaced from said cutting element and having sawteeth disposed below the same and adapted to guide said cutting elementduring the operation of the saw.

2. In a device of the character described, an adjustable cuttingelement, a guide spaced from said cutting element having its bottom edgebelow said cutting element and saw teeth arranged in said guide andadapted to guide said cutting element during the sawing operation.

3. In a device of the character described, a cutting element, anadjustable guide for said cutting element terminating below said cuttingelement and in spaced relation therewith and sawing means arranged insaid guide, extending beyond the cutting point of said element andadapted to guide said cutting element during the sawing operation.

t. In a device of the character described, the combination of a pair ofcutting elements and a sawing element disposed in a plane lower thansaid cutting elements, spaced therefrom, and adapted to serve as a guidetherefor. f

5. In a device of the character described, a pair of adjustable cuttingelements, a guide for said cutting elements having its bottom edge belowthe same and saw teeth arranged in said guide and adapted to guide saidcutting elements during the sawing operation along an area remote fromthe cutting point.

6. In a device of the character described having a pair of adjustablecutting elements, guiding means for said cutting elements, said guidingmeans carrying one of said cutting elements and having its bottom edgepositioned below said cutting elements and adapted to guide the sameduring the cutting operation.

7. In a tool of the class described having a cutting element, thecombination of a guiding means for said element, sai-d means comprisinga plate terminating below said cutting element and in spaced relationtherewith and a second cutting element adjustably mounted on said plate,the cutting operation olli' loth of said elements being guided by said pa e.

8. In a tool of the class described having an adjustable cuttingelement, the combination of ust-able guiding means, said meansc0mprising a plate terminating below both of said cutting elements and asecond cutting element adjustably mounted on said plate, the cuttingoperation of both of said elements being guided by said plate.

9. In a device of the character described, an adjustable cuttingelement, adjustable guiding means for said cutting element, said guidingmeans terminating below said cutting element, an-d spaced therefrom, andarranged to serve as a saw during the operation of said cutting element.

1Q. In a device of the character described having a pair of cuttingelements, the combination of guiding means for said cutting elements,said guiding means adjustably supporting one of said cutting elementsand terminating below both of said elements and spaced from one thereofand arranged to serve as a saw during the operation of said cuttingelements.

FRED W. KAMMERER.

.lOO

